B - Operations – Transporting – 61 – D
Patent
B - Operations, Transporting
61
D
105/170
B61D 17/00 (2006.01) B61D 3/16 (2006.01) B61D 17/04 (2006.01)
Patent
CA 1265388
Abstract of the Disclosure This invention relates to centre beam freight cars. The purpose of these freight cars is to carry large, bulky freight which does not require much protection from the elements. Thus, any freight car must have wide utility and sufficient rigidity but a tare mass which does not constitute a high proportion of the fully laden mass of the freight car. The prior art freight cars suffer from a high tare mass proportion in order to provide suffi- cient rigidity. In this invention, a freight car is provided with a centre beam structure in the form of a vertical truss having a horizontal truss mounted on the top of it. Either of the trusses, or both, are in the form of an open truss. This centre beam structure provides a freight car which has adequate resistance to normal lateral and compressive stresses but has a relatively low tare mass in relation to its fully laden mass.
545032
Butcher Ronald S.
Khattab Mohamed A.
Bereskin & Parr
National Steel Car Limited
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